Analyzing the effect of transformer utilization factor in distribution networks as an investment management index by using DisPlan software

Distribution transformers are one of the most expensive devices in distribution networks. Finding the appropriate location and size of these transformers could extremely influence the total investment of the network. The utilization factor value of the transformers can play a significant role in sizing and locating them in design and operation stages of the network. Generally, it is assumed that any increase in the utilization factor of the transformers can lead to a decrease in the required investments in distribution systems. However, it seems that the distribution network structure and geographical pattern of the electrical loads may affect the appropriate value of the transformer loading and its related utilization factor. This topic is investigated in this paper to obtain the optimal value of the utilization factor via studying two real cases with different structural specifications and load types. The optimum designs of these two networks with different values of the transformer utilization factors are provided using the DisPlan software and the results are presented and the effect of utilization factor is discussed in detail..